Set unusedLocals as warning, for now
Set unusedLocals as warning, for now

Recent compiler release introduced a bunch of new unused local failures
google/closure-library,ikabirov/closure-library,ikabirov/closure-library,redforks/closure-library,lucidsoftware/closure-library,google/closure-library,teppeis/closure-library,ikabirov/closure-library,ikabirov/closure-library,teppeis/closure-library,lucidsoftware/closure-library,google/closure-library,platinumpixs/google-closure-library,redforks/closure-library,teppeis/closure-library,platinumpixs/google-closure-library,lucidsoftware/closure-library,redforks/closure-library,teppeis/closure-library,platinumpixs/google-closure-library,google/closure-library,google/closure-library,platinumpixs/google-closure-library,redforks/closure-library,lucidsoftware/closure-library